一种基于偏振分光与差动信号处理的滚转角测量装置与测量方法
By utilizing a roll angle measurement device based on polarization spectroscopy and differential signal processing, the problems of light source fluctuation and structural complexity in existing technologies are solved through polarization decomposition and signal processing, achieving high-precision, low-cost, and fast-response roll angle measurement.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HARBIN INST OF TECH
- Filing Date
- 2025-06-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing roll angle measurement methods suffer from problems such as susceptibility to light source fluctuations, interference from stray light in the environment, complex structure, limited resolution improvement, and susceptibility to mechanical vibration and liquid surface characteristics, making it difficult to achieve high-precision and simple roll angle measurement.
A roll angle measurement device based on polarization beam splitting and differential signal processing is adopted. The laser emitted by the light source is incident on the polarizer and split into parallel and vertically polarized light. The photodetector signal is processed by addition and subtraction modules to calculate the change of the angle between the polarization beam splitter and the polarizer, so as to realize the roll angle measurement.
It reduces dependence on light source stability, minimizes stray light effects, has a simple structure, low cost, is insensitive to vibration, has a fast response speed, is suitable for dynamic process measurement, is unaffected by other degrees of freedom motion, and is easy to integrate.
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Abstract
Citation Information
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